Besides attentional blink, there are many more very interesting effects of videogames on the brain. Again, imagine yourself looking at a screen. There is a circle on the screen, and various shapes can appear on it like numbers around a clock.

Your task is to hunt for a diamond that appears on the circle. Sometimes, the diamond is the only thing that appears, in which case the task is trivial, and sometimes there are other shapes that appear around the circle to make it harder. In addition to this, there is sometimes an additional distractor shape that shows up either inside or outside of the circle.

Your brain can't help but pay attention to this distractor, and interestingly, if the distractor is a diamond, it actually will help you find the diamond on the circle more quickly. If the distractor is not a diamond (e.g. a square or a circle), it will slow you down.

When the task becomes difficult (many other objects on the circle along with distractors), the diamond-shaped "helpful distractor" actually loses its effectiveness. Interestingly, this only happens in nongamers. Videogame players are still sped up by same-shape distractors and this happens no matter how hard the task is.

A reasonable explanation for this is that videogame players have higher attentional capacity. It seems that there’s less of an attentional bottleneck.